Signing encrypted or write protected documents - `KeyError: 'password'`

[mosuem]

Traceback (most recent call last):
  File "/.../Simple-Signer-1.7.0/venv/lib/python3.12/site-packages/simple_signer/simple_signer.py", line 603, in DoSign
    signData = cms.sign(pdfData, dct, p12Data[0], p12Data[1], p12Data[2], 'sha256')
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/.../Simple-Signer-1.7.0/venv/lib/python3.12/site-packages/endesive/pdf/cms.py", line 1022, in sign
    return cls.sign(
           ^^^^^^^^^
  File "/.../Simple-Signer-1.7.0/venv/lib/python3.12/site-packages/endesive/pdf/cms.py", line 673, in sign
    rc = prev.decrypt(udct["password"])
                      ~~~~^^^^^^^^^^^^
KeyError: 'password'

When trying to sign.

openssl pkcs12 -in /home/.../keyStore.p12 -info -noout -nokeys

shows that the password is correct.

[schorschii]

Your PDF is encrypted, right? This error is not about the cert password, but the PDF password. Signing encrypted PDFs is currently not supported.

[mosuem]

Thanks! It's not password encrypted, but the PDF seems to have editing disabled. I also can't write text on it in Adobe.